From 218a320a3ddc508487071dfe45f18a1780976241 Mon Sep 17 00:00:00 2001
From: Gonzalo Rodriguez <grzuy0@gmail.com>
Date: Tue, 23 Jan 2018 16:54:13 -0300
Subject: [PATCH] Fixes warning instead of hiding it

Warning was: 'warning: instance variable @data not initialized'
---
 Rakefile                       | 1 -
 lib/rack/attack/store_proxy.rb | 5 ++++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/Rakefile b/Rakefile
index 5f7e9e0..300ec21 100644
--- a/Rakefile
+++ b/Rakefile
@@ -10,7 +10,6 @@ namespace :test do
 
   Rake::TestTask.new(:integration) do |t|
     t.pattern = "spec/integration/*_spec.rb"
-    t.warning = false
   end
 end
 
diff --git a/lib/rack/attack/store_proxy.rb b/lib/rack/attack/store_proxy.rb
index 4d69853..de0bc0c 100644
--- a/lib/rack/attack/store_proxy.rb
+++ b/lib/rack/attack/store_proxy.rb
@@ -20,7 +20,10 @@ module Rack
         # We also want to use the underlying Dalli client instead of ::ActiveSupport::Cache::MemCacheStore,
         # and the MemCache client if using Rails 3.x
 
-        client = store.instance_variable_get(:@data)
+        if store.instance_variable_defined?(:@data)
+          client = store.instance_variable_get(:@data)
+        end
+
         if ACTIVE_SUPPORT_WRAPPER_CLASSES.include?(store.class.to_s) && ACTIVE_SUPPORT_CLIENTS.include?(client.class.to_s)
           client
         else